Costco’s $1.50 hot dog combo may not be around forever, according to a statement Costco’s former CFO made backtracking on his promise to keep the “recession-proof” $1.50 hot dog and soda combo. “It’s probably safe for a while,” outgoing Costco CFO Richard Galanti told Bloomberg on Tuesday, giving an indication that the price might change in the future. The wholesaler chain has offered this hot dog and soda combo since 1985, and while its menu has changed across its U.S. stores, this menu item has remained on the menu at a fixed price. David Fuller, assistant vice president of publishing at Cos…